No slip surfaces lie within the specified limits No slip surfaces lie within the specified limits BurtL (Geotechnical) (OP) 2 Sep 14 11:22 This is the error message I receive when I Start the Solve Manager in Geo Studio 2013. Any ideas? With thanks, RE: No slip surfaces lie within the specified limits oldestguy (Geotechnical) 2 Sep 14 13:27 No knowing what your program requires, I's suggest making a sketch of your situation and copy it to a file and add it to a post here so that there can be comments as to where you have or should show the limits of computations. There might be some other limitation in the program that you missed. RE: No slip surfaces lie within the specified limits GeoPaveTraffic (Geotechnical) 2 Sep 14 13:50 You have something defined incorrectly in your search routine. Could be anyone of a half dozen things depending on how you are specifiying your slip surface. Mike Lambert RE: No slip surfaces lie within the specified limits BurtL (Geotechnical) (OP) 3 Sep 14 04:41 Thank you for the replies. Geo Studio came to the rescue (once I had sent them the file). The slip surface limits of my analysis were set at a single point. It may be worth taking me back to first principles. Any interest?